“The issue with cannabis is that it can stay in the system for several hours, even days. This is worrying, especially from an occupational health and safety perspective,” Wessels said.
The workplace was "not considered a private space" and employers could take action against employees who were under the influence of cannabis.
Steps could include:
• Asking the employee to leave the workplace;
• Disciplinary action;
• Urine, saliva and blood tests to determine the presence of THC in the system.
“Of course, employees have to consent to the testing. However, if they are caught in a lie about their cannabis consumption, they could be in breach of their employment contract and/or possibly guilty of dishonesty, which could ultimately lead to them being dismissed.”